I was recently sweating the baby dearth in 2020-2021 for the softball program I managed. We had a much smaller t-ball group. That seems to have balanced out.
I get what you are putting down, nobody in Europe really cares that all the small towns have fewer people than houses because agriculture is mechanized and talent flows to the cities where life is more fun. China is just an extreme case because they have 4 residential spaces for every person and the investment that built that housing is looking to recoup its cash.